The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2002
Filed:
Dec. 18, 1996
Michael L. Lubin, Del Mar, CA (US);
Seton P. Kasmir, San Diego, CA (US);
Kathryn A. Kubasak, Carlsbad, CA (US);
Gregory A. Hein, Encinitas, CA (US);
Surendra B. Mandava, San Jose, CA (US);
Chanchai Poonpol, San Diego, CA (US);
Shahin Hedayat, San Ramon, CA (US);
Donald W. Burtis, Los Altos, CA (US);
Pacific Communications Sciences, Inc., , CA (US);
Abstract
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available in the handset, an analog cellular communication mode and a Cellular Digital Packet Data (CDPD) mode. A paging function for incoming analog cellular communication is carried out on a CDPD channel. The handset distinguishes between paging signals identifying CDPD mode communications and paging signals identifying analog cellular communications. The handset automatically preempts CDPD communications in favor of analog cellular communications such as those carried out in an AMPS configuration.